Digital cameras forum: "Incompatible JPEG format"

Sometimes when reviewing the photos on my camera card, I'll discover that an image has been replaced with a large question mark and the phrase "Incompatible JPEG format." What happened to cause this, and is there anything I can do to prevent it from happening in the future?

(If it's of any help, my camera is a Canon Powershot A710IS, and I use Sandisk brand SD memory cards.)

I too am having this problem with Canon A590 IS. After inserting my SanDisk memory card into the slot on my friends laptop (Vista)and uploading them with the Canon software ZoomBrowserEX, I went back home and tried to view the pics via the camera's LCD. Some are there, but some say "incompatible jpg" HAVE THESE PHOTOS BEEN LOST FOR GOOD? You recommended uploading all images from the card and then formatting the card....but HOW DO I RETREIVE THE 'INCOMPATIBLES' ??

I had the same problem trying to open the photos on my compter after downloading them first to a friends PC, and another friends MAC. Only the photos that I had previously downloaded have the ? mark. Those that I had not copied are still intact.I can see the images on the camera, but when I download them to my computer they have a ?mark, and message "incompatible jpeg". I tried to open in adobe photo shop and the message was "unknown or invalid jped marker".All of the photos are still visible on the camera LCD.

I actually had a similar problem and removed the card from my camera and copied over the files to my computer. Not sure why you would need to use a photo recovery program for the files though.

If you do need a photo recovery program, I have used two and both were seemed fine, Adroit photo recovery and Art Plus. As mentioned earlier there are tons of other photo recovery programs, you can try them, but again not sure why you would need to run a photo recovery program unless you find that you are unable to fine some of your photos.

The image is still on the card and is safe. You may have done nothing more than rotated the image in your editing or viewing mode, and now it won't display on your camera screen. It appears to be a Canon thing as it happens on my XSi and my G10 as well. As others have said, work with the file on your computer as needed. There should be no reason to recover anything, it's all still on the card.

helloI had problem "Incopatible JPEG format" and then I copyed all on my pictures (nrear 1500 pictures) in the pc then format sd memorycard. then I copy all of my pictures in the cs memory card. OOOOOOH MY GOD. I pot memory sd card in my camera it is not working, I put again in pc and pc couldn't find sd card. I am sure I paste all 1500 pictures in sd card now sd card is not work. OH MY GOODwhere is my picture???? whats hapend in my sd card??? it is burn??? it can not work again?? 8 gb sd cardplease answer me.thank you

If you believe this post is offensive or violates the CNET Forums' Usage policies, you can report it below (this will not automatically remove the post). Once reported, our moderators will be notified and the post will be reviewed.

Track this thread and email me when there are updates.Please read before posting

If you're asking for technical help, please be sure to include all your system info, including operating system, model number, and any other specifics related to the problem. Also please exercise your best judgment when posting in the forums--revealing personal information such as your e-mail address, telephone number, and address is not recommended.

Old Thread Warning!

This thread is more than days old. It is very likely that it does not need any further discussion and replying to it will serve no purpose. However, if you feel it is necessary to make a new reply, you can still do so.

I am aware that this thread is old, but I still want to post a reply.

Checkbox must be checked in order to post in this old thread.

Sorry, there was a problem submitting your post. Please try again.

Sorry, there was a problem generating the preview. Please try again.

Duplicate posts are not allowed in the forums. Please edit your post and submit again.